number = 9
my_name = 'jack'
print(type(my_name))
print(my_name, '的幸运数字是', number)
number = '北京欢迎您！'
print(type(number))
# 允许多个变量指向同一个值
num = number = 1024
print(id(num))  # id() 查看对象的内存地址
print(id(number))
